Impacts of thermal circulations induced by urbanization on ozone   formation in the Pearl River Delta region, China

doi:10.1016/j.atmosenv.2015.10.075

CORC > 北京大学 > 环境科学与工程学院

	Impacts of thermal circulations induced by urbanization on ozone formation in the Pearl River Delta region, China
	Li, Mengmeng ; Song, Yu ; Mao, Zhichun ; Liu, Mingxu ; Huang, Xin
刊名	ATMOSPHERIC ENVIRONMENT
	2016
关键词	Urbanization Thermal circulation Ozone PRO LAND-USE CHANGE AIR-QUALITY BOUNDARY-LAYER WRF MODEL SURFACE PARAMETERS EMISSION INVENTORY INITIAL CONDITIONS EASTERN CHINA UNITED-STATES COVER
DOI	10.1016/j.atmosenv.2015.10.075
英文摘要	Thermal circulations induced by urbanization could exert important effects on regional ozone (O-3) formation through regulating the chemical transformations and transport of O-3 and its precursors. In this study, the Weather Research and Forecasting/Chemistry (WRF/Chem) model combined with remote sensing are used to investigate the impacts of urbanization-induced circulations on O-3 formation in the Pearl River Delta (PRD) region, China. The urban heat island (UHI) effect in PRD significantly enhances turbulent mixing and modifies local circulations, i.e., initiates the UHI circulation and strengthens the sea breeze, which in turn cause a detectable decrease of daytime O-3 concentration (-1.3 ppb) and an increase of O-3 (+5.2 ppb) around the nocturnal rush-hours. The suppressed O-3 titration destruction due to NOx dilution into the deeper urban boundary layer (200-400 m) is the main reason for elevated nocturnal O-3 levels. In the daytime, however, the upward transport of O-3 precursors weakens near surface O-3 photochemical production and conversely enhances upper-level O-3 generation. Furthermore, the surface UHI convergence flow and intensified sea breeze act to effectively trap O-3 at the suburban and coastal regions. (C) 2015 Elsevier Ltd. All rights reserved.; National Natural Science Foundation of China [41275155, 41121004]; Public Welfare Project for Environmental Protection [201309009]; Chinese Ministry of Science and Technology [2010CB428501]; special fund of State Key Joint Laboratory of Environment Simulation and Pollution Control [14Y01ESPCP]; SCI(E); EI; ARTICLE; songyu@pku.edu.cn; 382-392; 127
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/437704]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Li, Mengmeng,Song, Yu,Mao, Zhichun,et al. Impacts of thermal circulations induced by urbanization on ozone formation in the Pearl River Delta region, China[J]. ATMOSPHERIC ENVIRONMENT,2016.
APA	Li, Mengmeng,Song, Yu,Mao, Zhichun,Liu, Mingxu,&Huang, Xin.(2016).Impacts of thermal circulations induced by urbanization on ozone formation in the Pearl River Delta region, China.ATMOSPHERIC ENVIRONMENT.
MLA	Li, Mengmeng,et al."Impacts of thermal circulations induced by urbanization on ozone formation in the Pearl River Delta region, China".ATMOSPHERIC ENVIRONMENT (2016).